Horse boot



FIG. 1 is a perspective top view of a horse boot showing my design;

FIG. 2 is a perspective bottom view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right-side elevational view thereof, the left-side being a mirror-image thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The blank portion contained within the broken lines in FIGS. 1, 5 and 6 forms no part of the claimed design. 

The ornamental design for a horse boot, as shown and described. 